Shale oil becomes economically viable at a lower price per barrel of oil than ______.Multiple select question.tar sands oilBrazilian sugar-case-based ethanolbiodieselU.S. corn-based ethanol

Biodiesel becomes economically viable when the price of oil reaches ______ per barrel.Multiple choice question.$80$20$110$120

The prices at which alternative energy sources become economically viable can be thought of as the ______.Multiple choice question.supply curve for oilaverage cost of productionsupply curve for energymarginal cost of production

Multiple Choice QuestionFossil fuels currently account for about Blank______ percent of the world's commercial energy needs.Multiple choice question.8054248

Events in the U.S. market for gasoline in the latter half of 2005 produced a _____ equilibrium price and a _____ equilibrium quantity.Multiple choice question.lower; higherlower; lowerhigher; higherhigher; lower

Multiple Choice QuestionA resource that is phenomenally efficient in producing something that no one wants to buy Blank______.Multiple choice question.will exhibit no demandis characteristic of capitalexhibits decreasing marginal returnswill exhibit no supply